About the "NEON" alert

Hello dear friends, I noticed that in the “NEON” menu (This is a temporary database. It will be deleted)
this means that my website will be offline after this period, for free accounts is it mandatory to open an account on the “NEON” website?
I thank you in advance for your attention.

No, it’s only applicable if you used Neon database in your project. If not, nothing will happen to your site.